Question: (a) Let '(x) be continuous. Show that (b) Explain the result of part (a) graphically. lim h0 f(x+h)-f(x - h) 2h h) = f'(x).
(a) Let ƒ'(x) be continuous. Show that

(b) Explain the result of part (a) graphically.

lim h0 f(x+h)-f(x - h) 2h h) = f'(x).
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